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27 ****************************************************************************/
29 /***************************************************************************
31 * Author : Juergen Pfeifer *
33 ***************************************************************************/
35 #include "form.priv.h"
37 MODULE_ID("$Id: fty_alnum.c,v 1.21 2007/10/13 19:31:52 tom Exp $")
39 #define thisARG alnumARG
47 /*---------------------------------------------------------------------------
49 | Function : static void *Make_This_Type(va_list *ap)
51 | Description : Allocate structure for alphanumeric type argument.
53 | Return Values : Pointer to argument structure or NULL on error
54 +--------------------------------------------------------------------------*/
56 Make_This_Type(va_list *ap)
58 thisARG *argp = typeMalloc(thisARG, 1);
62 T((T_CREATE("thisARG %p"), argp));
63 argp->width = va_arg(*ap, int);
66 return ((void *)argp);
69 /*---------------------------------------------------------------------------
71 | Function : static void *Copy_ThisType(const void *argp)
73 | Description : Copy structure for alphanumeric type argument.
75 | Return Values : Pointer to argument structure or NULL on error.
76 +--------------------------------------------------------------------------*/
78 Copy_This_Type(const void *argp)
80 const thisARG *ap = (const thisARG *)argp;
81 thisARG *result = typeMalloc(thisARG, 1);
85 T((T_CREATE("thisARG %p"), result));
89 return ((void *)result);
92 /*---------------------------------------------------------------------------
94 | Function : static void Free_This_Type(void *argp)
96 | Description : Free structure for alphanumeric type argument.
99 +--------------------------------------------------------------------------*/
101 Free_This_Type(void *argp)
107 /*---------------------------------------------------------------------------
108 | Facility : libnform
109 | Function : static bool Check_This_Character(
113 | Description : Check a character for the alphanumeric type.
115 | Return Values : TRUE - character is valid
116 | FALSE - character is invalid
117 +--------------------------------------------------------------------------*/
119 Check_This_Character(int c, const void *argp GCC_UNUSED)
121 #if USE_WIDEC_SUPPORT
122 if (iswalnum((wint_t) c))
125 return (isalnum(UChar(c)) ? TRUE : FALSE);
128 /*---------------------------------------------------------------------------
129 | Facility : libnform
130 | Function : static bool Check_This_Field(
134 | Description : Validate buffer content to be a valid alphanumeric value
136 | Return Values : TRUE - field is valid
137 | FALSE - field is invalid
138 +--------------------------------------------------------------------------*/
140 Check_This_Field(FIELD *field, const void *argp)
142 int width = ((const thisARG *)argp)->width;
143 unsigned char *bp = (unsigned char *)field_buffer(field, 0);
144 bool result = (width < 0);
146 Check_CTYPE_Field(result, bp, width, Check_This_Character);
150 static FIELDTYPE typeTHIS =
152 _HAS_ARGS | _RESIDENT,
153 1, /* this is mutable, so we can't be const */
160 Check_This_Character,
165 NCURSES_EXPORT_VAR(FIELDTYPE*) TYPE_ALNUM = &typeTHIS;
167 /* fty_alnum.c ends here */